edgar



2 Sheets-Sheet 1.

'(ModeL) J. M. EDGAR.

LOCK.

. A G D E M J LOOK.

Iva 352,085.

Patented Nov. 2, 1886.

Nv PETERS. Pnow-Lflhogmphcr. washings". 04 c.

UNITED STATES PATENT OFFICE.

Josnrn n. EDGAR, or KANSAS oi'rr, MISSOURI, ASSIGNOR TO JOHN Z. RORABAOK, or SAME rLAcn.

LOCK.

SPECIFICATION forming part of Letters Patent Nd. 352,085, dated November 2, 1886.

' Application filed July 29, 188' Serial No. 209,421. (Model-l ful Improvements in Safety-Locks; and I hereby declare the following to be a full, clear,

- and exact description of the same.

My present invention is in the nature of an improvement upon the device for which Letters Patent of the United States No. 3%,176 were granted to me on the 22d day of June, 1886. Like my aforesaid patented device, the subject of the present application is designed particularly for use upon freight-car doors and the like, and constitutes a look only in the sense that it affords a guard, by preventing tampering with it without detection, and not that it precludes the possibility of manipulation without the use of a key or the setting of it to a certain secret combination for the purpose of opening it, to permit access to the object guarded by it.

The manner of using my present device is, generally speaking, the same as that of using my said former look, as it also contains registering mechanism actuated to form a diiierent combination, Visible through the case with each manipulation of the bolt, which must be moved to gain access to the object guarded, whereby any change in a certain recorded or noted combination indicates tampering and enables the responsibility to be properly located.

It is the object of my present improvement greatly to simplify the mechanism of my aforesaid patented device, thereby to decrease in proportion the cost of its production and insure the accuracy of its operation.

To this end my invention consists in the general construction of the improved safetylock; and it also consists in certain details of construction and combinations of parts, all as hereinafter more fully set forth.

In the drawings, Figure 1 shows my improved safety-lock in elevation, applied to the door of a freight-car, to prevent access to the interior of the car without moving the bolt, which is passed through a staple over ahasp, and thus supports the device. Fig. 2 is a broken view, in elevation, of the lock,showing the bolt'raised to display the means I prefer to employ to lock it. Fig. 3 shows the lock in elevation,with the coveringplate removed to display the internal mechanism. Fig. 4 is a sectional view taken on the line 4 4 of Fig. 3, and viewed in the direction of the arrows. Fig. 5 shows a broken plan view, in full'lines, of one of the disks of the registering mechanism in normal position with reference to another such disk represented in top plan view by dotted lines. Fig. 6 is a perspective view of the bolt shaft or arbor, with the spring-pawl and catch details for actuating the registering mechanism by manipulating the bolt shown in dotted lines. Figs. 7, 8, and 9 are perspective views of details; and Fig. 10 is a sectional view taken on the line l0 10 of Fig. 1, and Viewed in the direction of the arrows. v

The simplification in the present over my .former device is afforded, principally, by the different construction and arrangement in the former of the disks of the registering mechanism, these requiring a relative arrangement, whereby a complete revolution of one must be produced to turn its immediate companion disk the extent of one tooth or display a nul meral adjacent to that presented, and this throughout the entire series necessitated in the construction of my former devicethe arrangement of the disks on different planes one above the other, and 'a mechanism for the purpose considerably complicated and involving numerous parts. I now by mynew construction accomplish the same end without employing other parts than the disks themselves, and arrange the latter on parallel inclined planes.

A is the case, comprising the head i and shank t, and provided with a covering-plate,

t, having openings 25 and lugs t" on its under side, the lugs and openings serving purposes hereinafter stated. Vithin the case A, directly below the lugs 26 on the covering-plate, are lugs s,(see Fig. 4,) inclined on their upper surfaces all in the same direction and in equal degree,and provided with rigid shaft-s 1", which extend from them all in parallel inclined directions toward the lugs 15*, which are beveled on their lower surfaces to coincide with the incline of the lugs s. The shafts 9" serve to carry a disk, B, and disks 13, each provided circumferentially with numerals ranging from to 9, and the disks are supported on the in clined surfaces of the lugs s, and are prevented from being displaced, to any material extent with overturning of the device, by the lugs t on the covering-plate.

The disks B, of which any required number (depending upon the number of changes in the combination desired) may be provided, are all constructed alike, though the last one may differ slightly, in the manner hereinafter stated, from the others. Each disk B and B is provided on its under side with a circular flange, q, Figs. it and 5, separated to leave a lip, 12, and spaces 0 and 0, one on each side of the lip, and directly behind the lip p is a lug or projection, p, in radial line with the numeral 9.

Upon the upper surface of each disk B, arranged around the axial opening and each in radial line with a different numeral thereon, are pins or projections n, the arrangement being such that the flange g on one disk will overlap three pins or projections, 01, of the circle on the disk immediately ahead of it, whereby when the overlapping disk is turned the lugp' thereon will once during the revolution come into contact with the middle pin or projection, n, of those covered or inside the flange q, and turn the overlapped disk until such projection a shall be removed from the path of the lug p, the openings 0 and 0 permitting the pin at one side of the said middle pin to be turned through one opening out of the circle described by the overlapping disk, while through the other opening another pin or, adjacent to that next to the center one on the opposite side, enters the circle described by the disk, whereby the extreme pin a of the three in one operation becomes the center pin for the next operation. Of course the turning of one disk in one direction turns the one it overlaps in the opposite direction, as in spurwheel gearing.

\Vhile it is not necessary to provide a lip, 19, or lug p, or even a flange, g, on the last disk B of the series, since that disk does not serve to move another, but is only moved, these features afford no obstacle, which fact avoids the necessity of providing one disk B of difi'erent construction from the other disks B for the last of the series. The disk B is like the disks B; but instead of the pins n provided thereon, as described, it has peripheral teeth m.

C is the bolt, secured at one end upon the arbor 0, outside the case A, (the arbor extending through openings in the base and covering plates, which thus forms bearings,) whereby turning of the bolt turns the arbor, and the bolt is curved, as shown, to enter itslocked position through aslotted'lug, Z, on the covering-plate t the locking being effected by a flat spring, k, Fig. 10, fastened near one end to the under side of the covering-plate t and provided toward its opposite end with pins or lugs k and k", which pass through coincident openings in the covering-plate, the pin k entering a recess, 7.1", Fig. 10, in the bolt when the latter is slid over it. To release the bolt previous to its withdrawal the pin 76- must be depressed to withdraw the pin 7; from the recess k This locking device, however, does not form an important feature of my improvement, inasmuch as the only purpose of locking the bolt at all is to render it sufficiently rigid or stable to support the safety-lock in hanging position, which, obviously, could be accomplished in any one of many different waysas, for example, by providing a stiff spring near the base of the bolt to resist its withdrawal from the position shown in Fig. 1.

The arbor G is cylindrical at its bearingpoints, though between the latter it is foursided, as shown in Fig. 6, and also at the end where the bolt is applied to it, and it is further provided with a collar, 1 at'fordingastop. Below the collar 6, on the arbor G, is a loose pawl, D, having a recess, 1 on its rear surface, and below the pawl D is a spring, E, coiled around the arbor to produce two arms, h and h, the one h to enter the recess or groove i in the pawl. Below the spring on the square portion of the arbor is an arm or eccentric, F, having pivoted to it toward one extremity a catch, G, provided on its rear side with arecess or groove, 9, to receive the arm h of the spring E. The catch G engages with the teeth at of the disk B to pull it around, by turning the arbor 0 through the medium of the bolt 0, and the pawl D holds it while the catch is being moved back to engage with another tooth on, the arms of the spring serving to hold the pawl and catch against the periphery of the disk B.

From the foregoing the operation of the device in its purpose will be understood without further description, since it will readily be seen that each time the bolt 0 is moved from its position shown in Fig. 1 to or toward that shown in Fig. 2, the disk B will be turned to present a different numeral at the adjacent opening in the covering-plate thus changing the combination, which cannot be recovered,

owing to the action of the pawl D, and displaying the desired information.

The openings in the top plate may be covered with glass or other suitable transparent substance, to prevent snow, wet, or dirt from entering the case. A lug, w, on the under side of the top plate serves to steady the catch G.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a safety lock or guard for freight-car doors and the like, the combination of registering mechanism comprising intermeshing rotary disks B and B, inclined in parallel planes to overlap each other, a catch to engage with the registering mechanism and actuate the same, and a bolt provided with an eccen tric arm connected with the catch to actuate the latter by movement of the bolt, substantially as and for the purpose set forth.

2. In a safety-lock or guard for freight-car doors and the like, the combination of regis- 352,085. r v a tering mechanism comprising inclined numbered rotary disks B, overlapping each other, and provided on their under surfaces with flanges q, lips 19, openings 0 and 0, and lugs 19, and on their upper sides with pins n,,arranged in circles, and a disk, B, formed on its under side like the disks B, and provided with teeth m, and a bolt connected with the registeringinechanism to actuate the same by movement of the bolt, substantially as and for the purpose set forth.

3. In a safety lock or guard for freight-car doors and the like, the combination, with the case A, having inclined lugs s on its base, and inclined lugs t* on the covering-plate, provided with openings i of registering mechanism comprising inclined numbered rotary disks B B, inclined shafts 1', extending from the lugs s, the disks overlapping each other and having on their under surfaces flanges q, lips 11, openings 0 and 0, and lugs 19, pins n, arranged in circles on the upper sides of the disks B, and teeth m on the disk B, a catch, G, to engage with the teeth of the disk B and actuate the registering mechanism, and a bolt, C, provided with an eccentric arm, F, connected with the catch to actuate the latter by the movement of the bolt, substantially as and for the purpose set forth. I

4. In a safety lock or guard for freight-car doors and the like, the combination of registering mechanism comprising inclined intermeshing rotary disks B B, and means for actuating said mechanism, comprising an arbor, O, a bolt, 0, an eccentric arm,-F, a pawl, D, a spring, E, on the arbor, having arms h h, and a catch, G, connected withthe arm F, to engage with the disk B, substantially as and for the purpose set forth.

5. A safety lock or guard for freight-car doors and the like, comprising in combination a case, A, having inclined lugs s on its base and inclined lugst on the covering-plate, said plate provided with openings t numbered rotary disks B B on inclined shafts r, extending from the lugs s, the disks overlapping each other and having on their under surfaces flanges q, lips 19, openings 0 and 0, and lugs 12, pins a, arranged in circles on the upper sides of the disks B, and teeth m on the disk B, and means for actuating the disks, comprising an arbor, 'G, a bolt, 0, an eccentric arm, F, a recessed pawl, D, a spring, E, on the arbor, having arms h h, and a catch, G, connected'with said arm" F, to engage with the teeth or of the disk B, substantially as and for the purpose set forth.

JOSEPH M. EDGAR.

In presence of .ARTHUR W. PoWELL, HENRY A. WIMBUsn. 

